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Mark D. Dexter, MD Staff Physician, Division of Medical Critical Care Assistant Professor of Pediatrics, Tufts Medical School Image NPI 1033408513 Print Profile Request an Appointment Locations Boston Boston Children's Hospital 300 Longwood Ave. Boston, Massachusetts 02115 Phone: 617-355-6000 Listen Mark D. Dexter, MD Staff Physician, Division of Medical Critical Care Assistant Professor of Pediatrics, Tufts Medical School Medical Services Programs & Services Medical Critical Care General Pediatrics Languages English Education Undergraduate School George Washington University 2005 Washington DC Graduate School Georgetown University 2007 Washington DC Medical School Eastern Virginia Medical School 2011 Norfolk VA Residency Eastern Virginia Medical School/Children's Hospital of the King's Daughters 2014 Norfolk VA Fellowship University of North Carolina Hospitals 2017 Chapel Hill NC Locations Boston Boston Children's Hospital 300 Longwood Ave. Boston, Massachusetts 02115 Phone: 617-355-6000